<template>
  <div class="app-container">
    <el-form label-width="120px">

      <el-form-item label="信息描述">
        <el-tag type="info">excel模版说明</el-tag>
        <el-tag>
          <i class="el-icon-download"/>
          <a :href="templateHref">点击下载模版</a>
        </el-tag>
      </el-form-item>  


      <el-form-item label="选择Excel">
        <el-upload
          ref="upload"
          :auto-upload="false"
          :on-success="fileUploadSuccess"
          :on-error="fileUploadError"
          :disabled="importBtnDisabled"
          :limit="1"
          :action="BASE_API+'/eduservice/subject/addSubject'"
          name="file"
          accept="application/vnd.ms-excel">
          <el-button slot="trigger" size="small" type="primary">选取文件</el-button>
          <el-button
            :loading="loading"
            style="margin-left: 10px;"
            size="small"
            type="success"
            @click="submitUpload">上传到服务器</el-button>
        </el-upload>
      </el-form-item>
    </el-form>
  </div>
</template>

<script>
export default {
  data() {
    return {
      BASE_API: process.env.BASE_API, // 接口API地址
      importBtnDisabled: false, // 按钮是否禁用,
      loading: false,
      templateHref:'https://laowang-images.oss-cn-beijing.aliyuncs.com/excel/test.xlsx'//模板文件地址
    }
  },
  methods: {
      //点击上传
      submitUpload(){
        this.fileUploadBtnText = '正在上传'
        this.importBtnDisabled = true
        this.loading = true
        this.$refs.upload.submit()
      },
      //上传成功
      fileUploadSuccess(){
          this.loading=false
          this.$message({
          type: 'success',
          message: '上传成功!'
        });
        //跳到列表页
        this.$router.push({path:'/subject/list'})

      },
      //上传失败
      fileUploadError(){
          this.loading=false
          this.$message({
          type: 'success',
          message: '上传失败，请检查文件内容!'
        });
      }  
    }
}
</script>

<style scoped>
</style>

